KR20200049929A - Optical member and display divice including the same - Google Patents

Abstract

According to the present invention, a display device comprises a color controller including quantum dots; a barrier layer encapsulating the color controller; and a low refractive layer spaced apart from the color controller with the barrier layer interposed between the color controller and the barrier layer. The barrier layer may have a layer density of 1.50 to 3.0 g/cm^3. Therefore, the peeling problem can be reduced.

Description

OPTICAL MEMBER AND DISPLAY DIVICE INCLUDING THE SAME

The present invention relates to a display device, and more particularly, to a display device including an optical member with improved reliability.

Various display devices for providing image information in multi-media devices such as televisions, mobile phones, tablet computers, navigation systems, and game machines have been developed. Particularly, in display devices including liquid crystal display elements, organic electroluminescent display elements, and the like, quantum dots and the like are introduced to improve display quality.

In order to further increase light efficiency in a display device using such a quantum dot, an optical member using a low-refractive material is used, and in order to increase reliability of the display device, it is necessary to develop an optical member with improved durability while maintaining low-refractive properties.

ADVANTAGE OF THE INVENTION According to this invention, the optical member which improved the problem of peeling occurrence can be provided. Accordingly, a display device with improved reliability can be provided.

The optical member according to the present invention, a color control member including quantum dots (quamtum-dot), a barrier layer for sealing the color control member, and the barrier layer disposed between the color control member and the spaced apart It includes a refractive layer, the film density of the barrier layer is 1.50g / cm ³ To 3.0 g / cm ³ to be.

The barrier layer may be characterized by including silicon nitride (SiN _X ).

The content of nitrogen (N) compared to silicon (Si) of the barrier layer may be characterized in that it is 0.70 or more and 1.50 or less.

The residual stress of the barrier layer may be characterized in that -300MPa to 500MPa.

The barrier layer may be characterized by including silicon oxide (SiO _X ).

The residual stress of the barrier layer may be characterized in that -500MPa to 500MPa.

The barrier layer may include a first inorganic layer covering the rear surface of the color control member and a second inorganic layer covering the top surface of the color control member.

Each of the first inorganic layer and the second inorganic layer may be formed of a single layer.

The barrier layer may include silicon nitride (SiN _X ), the first inorganic layer having a thickness of 0.1 μm or more, and the second inorganic layer having a thickness of 0.3 μm or more.

The barrier layer may include silicon oxide (SiO _X ), the first inorganic layer having a thickness of 0.3 μm or more, and the second inorganic layer having a thickness of 0.3 μm or more.

At least one of the first inorganic layer and the second inorganic layer may include a first layer including silicon nitride (SiN _X ) and a second layer including silicon oxide (SiO _X ) stacked with the first layer. It may be characterized by including.

Each of the first layer and the second layer may be provided in plural, and the first layer and the second layer may be alternately arranged.

The display device according to the present invention includes a base substrate, a plurality of pixels disposed on the base substrate, a color control member disposed on any one of the upper and lower portions of the pixels, and including a quantum dot, and the color control member It includes a sealing barrier layer, a low refractive index layer disposed spaced apart from the color control member with the barrier layer interposed therebetween, and the barrier layer has a film density of 1.50 g / cm ³ It may be characterized by being 3.0 g / cm ³ .

The barrier layer may include a first inorganic layer covering the rear surface of the color control member and a second inorganic layer covering the top surface of the color control member.

The barrier layer may include silicon nitride (SiN _X ), and the content of nitrogen (N) compared to silicon (Si) of the barrier layer may be 0.70 or more and 1.50 or less.

The thickness of the first inorganic layer may be 0.1 μm or more, and the thickness of the second inorganic layer may be 0.3 μm or more.

The barrier layer includes silicon oxide (SiO _X ), the thickness of the first inorganic layer is 0.3 µm or more, and the thickness of the second inorganic layer is 0.3 µm or more.

Each of the pixels includes a transistor disposed on the base substrate, a first electrode connected to the transistor, a second electrode facing the first electrode, and a liquid crystal layer disposed between the first electrode and the second electrode It can be characterized by doing.

A light source that is disposed under the base substrate, provides a light source that provides light, a light exit surface facing the base substrate, a bottom surface facing the light output surface, an incident light surface facing the light source and connecting the bottom surface and the light output surface, the The light guide plate may further include a light guide plate having a large light surface facing the light incident surface, and the light may be blue light.

It may be characterized in that it further comprises a first polarizing layer and a second polarizing layer are disposed spaced apart from each other with the pixels therebetween.

Each of the color control members may include color controllers that convert the light into light of a different color.

A light blocking unit including a plurality of openings and an optical filter layer overlapping at least one of the openings may be further included, and at least one of the color controllers may be disposed to overlap the optical filter layer. .

Each of the pixels includes a transistor disposed on the base substrate, a first electrode connected to the transistor, a second electrode spaced apart from the first electrode, and an organic layer disposed between the first electrode and the second electrode. It may be characterized in that it comprises an organic light emitting device.

The color control member may include color controllers that convert light provided from the pixels into light of a different color.

The organic layer may be disposed on the front surface of the base substrate to provide blue light to the color control member.

The organic layer may include a plurality of patterns providing light of different colors, and each of the patterns may be overlapped with a corresponding color controller among the color controllers.

According to the present invention, the film density of the inorganic layer sealing the color control member is 1.50 g / cm ³ to 3.0 g / cm ³ By having the range of, it is possible to provide a display device in which peeling problems occurring between the low refractive layer and the barrier layer are improved.

1 is an exploded perspective view of a display device according to an exemplary embodiment of the present invention.
2 is a cross-sectional view of some components of a display module according to an exemplary embodiment of the present invention.
3 is a cross-sectional view of a display member according to an exemplary embodiment of the present invention.
4A and 4B are enlarged views of one configuration of an optical member according to an embodiment of the present invention.
5 is an exploded perspective view of a display device according to an exemplary embodiment of the present invention.
6 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention.
7 is a plan view of an optical member according to an embodiment of the present invention.
8 is an enlarged view of the CC area of FIG. 6 enlarged.
9A and 9B are enlarged views of one configuration of an optical member according to an embodiment of the present invention.
10 is an exploded perspective view of a display device according to an exemplary embodiment of the present invention.
11 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention.
12A and 12B are cross-sectional views of a display device according to an exemplary embodiment.

In this specification, when a component (or region, layer, part, etc.) is referred to as being “on”, “connected” to, or “joined” to another component, it is directly placed / on other component It means that it can be connected / coupled or a third component can be arranged between them.

The same reference numerals refer to the same components. In addition, in the drawings, the thickness, ratio, and dimensions of the components are exaggerated for effective description of technical content.

 “And / or” includes all combinations of one or more of which the associated configurations may be defined.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In addition, terms such as "below", "below", "above", "above", etc. are used to describe the relationship between the components shown in the drawings. The terms are relative concepts and are explained based on the directions indicated in the drawings.

Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. In addition, terms such as terms defined in commonly used dictionaries should be interpreted as having meanings consistent with meanings in the context of related technologies, and are explicitly defined herein unless interpreted as ideal or excessively formal meanings. It's possible.

The terms "include" or "have" are intended to indicate the presence of a feature, number, step, action, component, part, or combination thereof described in the specification, one or more other features, numbers, or steps. It should be understood that it does not preclude the existence or addition possibility of the operation, components, parts or combinations thereof. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is an exploded perspective view of a display device according to an exemplary embodiment of the present invention. 2 is a cross-sectional view of some components of a display module according to an exemplary embodiment of the present invention. 3 is a cross-sectional view of a display member according to an exemplary embodiment of the present invention. Hereinafter, a display device DS according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1 and 2, the display device DS according to the present invention includes a window member WP, a display module DD, and a storage member HAU. In one embodiment, the display device DS includes a display element and may provide an image. For example, the display device DS may be a liquid crystal display device or an organic electroluminescence display device.

Meanwhile, in FIG. 1 and the following drawings, the first direction axis DR1 to the third direction axis DR3 are illustrated, and the direction axes described herein are relative, and for convenience of description, the third direction axis DR3 direction May be defined as a direction in which an image is provided to a user. In addition, the first direction axis (DR1, hereinafter, the first direction) and the second direction axis (DR2, hereinafter, the second direction) are orthogonal to each other, and the third direction axis (DR3, hereinafter, the third direction) is the first It may be a normal direction to a plane defined by the directions DR1 and the second direction DR2. In FIG. 1, a plane defined by the first direction DR1 and the second direction DR2 may be a display surface on which an image is provided.

The window member WP is disposed on the display module DD. The window member WP may be made of glass, sapphire, or plastic. The window member WP includes a transmissive area TA that transmits an image provided from the display module DD, and a light blocking area BA adjacent to the transmissive area TA and through which the image is not transmitted. The transmissive area TA may be disposed in the center of the display device DS on a plane defined by the first direction DR1 and the second direction DR2. The light blocking area BA may be disposed at the periphery of the transmission area TA to have a frame shape surrounding the transmission area TA. However, the present invention is not limited thereto, and according to another embodiment of the present invention, the window member WP may include only the transmission area TA, and in this case, the light blocking area BA may be omitted. Also, the light blocking area BA may be disposed only on at least one side of the transmission area TA. Meanwhile, unlike the one illustrated in FIG. 1, the window member WP may be omitted from the display device DS according to an exemplary embodiment.

The display module DD according to the present invention includes a display panel DP, an optical member OPM, and a backlight member LP.

The display panel DP according to an embodiment may be disposed between the window member WP and the storage member HAU. The display panel DP may include a liquid crystal display element or an organic electroluminescence display element. In this embodiment, an embodiment in which the display panel DP includes a liquid crystal display element will be described.

The display panel DP according to an exemplary embodiment includes a first base substrate BL1, a display unit DPP, and a second base substrate BL2. The display unit DPP includes a first display layer SUB1, a liquid crystal layer LCL, and a second display layer SUB2. The first display layer SUB1, the liquid crystal layer LCL, and the second display layer SUB2 are disposed between the first base substrate BL1 and the second base substrate BL2.

The first base substrate BL1 may be provided as a base layer on which the components of the display portion DPP are deposited. Each of the first base substrate BL1 and the second base substrate BL2 may be a transparent insulating substrate. For example, it may be a glass substrate or a plastic substrate. In addition, it may be a metal substrate, and is not limited to any embodiment. The first base substrate BL1 and the second base substrate BL2 are disposed to face each other.

The display unit DPP includes pixels PX for displaying an image. The pixels PX may be arranged in a matrix shape. The display unit DPP of the display panel DP includes a display area DA in which pixels PX are displayed and a non-display area NDA adjacent to the display area DA.

The display area DA according to an embodiment may overlap the transmission area TA of the window member WP. The non-display area NDA may overlap the light blocking area BA of the window member WP, but is not limited thereto, and the non-display area NDA may be omitted. Also, the display area DA may be disposed only on at least one side of the non-display area NDA.

The first display layer SUB1 according to an embodiment may be defined as a layer including the transistor TR, the insulating layers INS1 and INS2, the pixel electrode PE, and the first alignment layer AL1. The second display layer SUB2 may be defined as a layer included in the second alignment layer AL2 and the common electrode CE.

The pixels PX are disposed between the first base substrate BL1 and the second base substrate BL2. Each of the pixels PX includes a transistor TR and liquid crystal capacitors PE, LCL, and CE. The transistor TR includes a control electrode GE, an input electrode SE, an output electrode DE, and a semiconductor pattern SM. The liquid crystal capacitors PE, LCL, and CE include a pixel electrode PE connected to the transistor TR, a common electrode CE facing the pixel electrode PE, and between the pixel electrode PE and the common electrode CE. And a dielectric layer being disposed. In an embodiment of the present invention, the dielectric layer corresponds to the liquid crystal layer (LCL).

Each of the pixels PX is connected to corresponding signal wirings among a plurality of signal wirings (not shown). The signal wirings include a plurality of gate lines and a plurality of data lines. The plurality of gate ridges are arranged in one direction of the display panel DP. The plurality of data lines are insulated from the plurality of gate lines.

The control electrode GE is disposed on the first base substrate BL1. The control electrode GE is connected to a corresponding gate line. The control electrode GE includes a conductive material. For example, a metal such as nickel (Ni), molybdenum (Mo), aluminum (Al), titanium (Ti), copper (Cu), and tungsten (W), or a metal oxide may be included. . The control electrode GE may be a single layer or multiple layers. The gate line may be made of the same material as the control electrode GE, and may have the same layer structure.

The first insulating layer INS1 covers the control electrode GE and the first base substrate BL1. The first insulating layer INS1 may include an inorganic material. For example, at least one of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxide nitride (SiON) may be included.

The semiconductor pattern SM is disposed on the first insulating layer INS1. At least a portion of the semiconductor pattern SM overlaps the control electrode GE.

Although the bottom gate type transistor is illustrated in FIG. 2, the present invention is not limited thereto, and the control electrode may also be applied to a top gate type transistor disposed on the input / output electrode, and is not limited to any one embodiment. .

The input electrode SE and the output electrode DE are disposed on the first insulating layer INS1. One side of the input electrode SE is connected to a corresponding data line, and the other side of the input electrode SE overlaps the semiconductor pattern SM. One side of the output electrode DE overlaps the semiconductor pattern SM, and the other side of the output electrode DE is connected to the pixel electrode PE. The other side of the input electrode SE and one side of the output electrode DE are spaced apart from each other.

Each of the input electrode SE and the output electrode DE includes a conductive material. For example, each of the input electrode SE and the output electrode DE is nickel (Ni), chromium (Cr), molybdenum (Mo), aluminum (Al), titanium (Ti), copper (Cu), tungsten (W) ), And at least one of each of these alloys. Each of the input electrode SE and the output electrode DE may be a single layer or multiple layers. The data line may be made of the same material as the input electrode SE, and may have the same layer structure.

The second insulating layer INS2 is disposed on the first insulating layer INS1. The second insulating layer INS2 covers the transistor TR. The second insulating layer INS2 includes an organic layer and / or an inorganic layer. The second insulating layer INS2 may be a single layer or multiple layers. For example, the second insulating layer INS2 may include an inorganic layer disposed on the transistor TR and an organic layer disposed on the inorganic layer to provide a flat top surface.

The pixel electrode PE is disposed on the second insulating layer INS2. The pixel electrode PE is electrically connected to the output electrode DE through a contact hole formed through the second insulating layer INS2. The pixel electrode PE may include a transparent conductive material. For example, Indium Tin Oxide, Indium Zinc Oxide, Indium Gallium Zinc Oxide, Fluorine Zinc Oxide, Gallium Zinc Oxide Or, it may include at least one of tin oxide (Tin Oxide). The pixel electrode PE is electrically connected to the output electrode DE through the contact hole defined in the second insulating layer INS2, and the pixel electrode PE receives a voltage corresponding to a data signal.

The liquid crystal layer LCL includes liquid crystal molecules having aromaticity. The liquid crystal molecules have various arrangements according to an electric field formed according to a voltage difference between the common electrode CE and the pixel electrode PE. The amount of light passing through the liquid crystal layer LCL may be adjusted according to the arrangement of the liquid crystal molecules.

The display panel DP according to the present invention may include a first alignment layer AL1 and a second alignment layer AL2. The first alignment layer AL1 is disposed between the pixel electrode PE and the liquid crystal layer LCL, and the second alignment layer AL2 is disposed between the liquid crystal layer LCL and the common electrode CE to form the liquid crystal layer LCL. Orient the liquid crystal molecules. The first alignment layer AL1 and the second alignment layer AL2 may be formed of a vertical alignment layer, and may include polyamic acid, polysiloxane, polyimide, and the like.

The common electrode CE is disposed on the second alignment layer AL2. As described above, the common electrode CE together with the pixel electrode PE constitutes a liquid crystal capacitor. The common electrode CE may include a transparent conductive material. For example, the common electrode CE is Indium Tin Oxide, Indium Zinc Oxide, Indium Gallium Zinc Oxide, Fluorine Zinc Oxide, Gallium Zinc Oxide It may include at least one of an oxide (Gallium Zinc Oxide), or tin oxide (Tin Oxide).

According to an embodiment of the present invention, the optical member OPM may include an optical sheet member OF, a color control member CCP, a barrier layer BRL, and a low refractive index layer LLR.

The optical sheet member OF is disposed under the display panel DP. The optical sheet member (OF) may include at least one of a diffusion sheet, a prism sheet, and a brightness enhancing sheet. The diffusion sheet may be disposed closest to the backlight member LP among the optical sheet members OF. The diffusion sheet may prevent light from being partially concentrated by dispersing light incident from the light guide plate GP. The diffusion sheet may include, for example, at least one of polyester and polycarbonate. The prism sheet serves to increase luminance by converting side light to front light and converging the emitted light with respect to the light that has passed through the diffusion sheet. The dual brightness enhance film serves to reduce the loss of light from the prism sheet. In the optical member OPM according to the present invention, the optical sheet member OF may be omitted.

Referring to FIG. 3, the color control member CCP according to an embodiment may be disposed between the display panel DP and the backlight member LP.

The color control member CCP may include a plurality of conversion particles that convert light incident from the light guide plate GP. Each of the converted particles absorbs at least a portion of the incident light, emits light having a specific color, or transmits it as it is.

When the light incident on the color control member (CCP) has sufficient energy to excite the converted particles, the converted particles absorb at least a portion of the incident light and become excited, and then stabilize and emit light of a specific color. In contrast, when the incident light has energy that is difficult to excite the conversion particles, the incident light may pass through the color control member (CCP) as it is and be recognized from the outside.

The color control member CCP may include a first converting body QD1, a second converting body QD2, and a base resin BR.

The base resin BR is a medium in which the first and second convertors QD1 and QD2 are dispersed, and may be generally referred to as a binder. The base resin BR may be referred to as a base resin BR regardless of its name, additional functions, and other constituent materials as long as it is a medium capable of dispersing the first and second transformants QD1 and QD2. The base resin (BR) may be a polymer resin. For example, the base resin (BR) may be made of various resin compositions such as acrylic resin, urethane resin, and epoxy resin.

Light emitted from the conversion particles of the color control member (CCP) may be emitted in various directions. The color control member CCP may include convertors QD1 and QD2 having different sizes according to the type of light provided from the light source unit LU to generate white light. The transformants QD1 and QD2 according to an embodiment may be quantum dots (QD).

For example, the transformants (QD1, QD2) can be selected from group II-VI compounds, group III-V compounds, group IV-VI compounds, group IV elements, group IV compounds, and combinations thereof. Group II-VI compounds include CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and binary elements selected from the group consisting of mixtures thereof; CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZn, Bovine compounds; And HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof.

Group III-V compound is a binary element selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; Ternary compounds selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP and mixtures thereof; And GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb and mixtures thereof.

Group IV-VI compound is a binary element selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; Ternary compounds selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe and mixtures thereof; And SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof.

The group IV element may be selected from the group consisting of Si, Ge and mixtures thereof. The group IV compound may be a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof. In addition, the forms of the transformants QD1 and QD2 are generally used in the field, and are not particularly limited. For example, spherical, pyramidal, multi-arm, or cubic nanoparticles, nanotubes, nanowires, nanofibers, nanoplatelets, or the like may be used.

However, the present invention is not limited thereto, and the color control member (CCP) may include a plurality of phosphors. When the light provided from the backlight member LP is blue light, a plurality of phosphors that absorb blue light and emit red light may be included. The red light phosphors may be, for example, at least one of sulfur (S), 2Si5N8, CaAlSiN3, CaMoO4, and Eu2Si5N8.

-SiAlON), Ca3Sc2Si3O12, Tb3Al5O12, BaSiO4, CaAlSiON, (Sr1-xBax)Si2O2N2 중 적어도 하나의 물질일 수 있다. The color control member CCP may include phosphors that absorb blue light emitted from the backlight member LP and emit green light. Green light phosphors are, for example, aluminum garnet (yttrium aluminum garnet, YAG), (Ca, Sr, Ba) 2SiO4, SrGa2S4, BAM, alpha sialon (α-SiAlON), beta sialon (

-SiAlON), Ca3Sc2Si3O12, Tb3Al5O12, BaSiO4, CaAlSiON, (Sr1-xBax) Si2O2N2.

The convertors QD1 and QD2 according to the present invention absorb blue light and convert it into light in a green or red wavelength band. Also, some of the blue light may not be absorbed by the convertors QD1 and QD2. Accordingly, white light may be generated while light of blue, green, and red wavelengths are mixed with each other in the color control member CCP.

The barrier layer BRL covers the color control member CCP. The barrier layer BRL may seal the color control member CCP together with the low refractive layer LLR so that the side surface of the color control member CCP is not exposed to the outside. The barrier layer BRL may serve to prevent penetration of moisture and / or oxygen flowing into the color control member CCP.

The barrier layer BRL may include at least one inorganic layer. That is, the barrier layer BRL may include inorganic materials. For example, the barrier layer (BRL) is silicon nitride (SiN _X ), aluminum nitride (AlN _X ), zirconium nitride (ZrN _X ), titanium nitride (TiN _X ), hafnium nitride (HfN _X ), silicon oxide (SiO _X ), Aluminum oxide (AlO _X ), titanium oxide (TiO _X ), and silicon oxynitride (SiO _X N _Y ).

In addition, the barrier layer (BRL) may include a metal thin film or the like having a light transmittance. Meanwhile, the barrier layer BRL may include an organic layer. For example, it may include at least one of polyimide, polyethylene terephthalate, polycarbonate, epoxy, polyethylene, and polyacrylate. . The barrier layer BRL may be composed of a single layer or a plurality of layers.

Hereinafter, the barrier layer BRL according to the present invention will be described as including silicon nitride (SiN _X ) and / or silicon oxide (SiO _X ).

The low refractive layer LLR may be disposed between the light guide plate GP and the color control member CCP. The low refractive layer LLR has a refractive index lower than that of the light guide plate GP. When the refractive index of the color control member (CCP) disposed on the light guide plate (GP) and the refractive index of the light guide plate (GP) are similar, total reflection is not properly performed at the boundary between the light guide plate (GP) and the color control member (CCP). A hot spot phenomenon occurs in which light incident on the GP is not light guided inside the light guide plate GP and is emitted to the outside, so that light is concentrated only in a certain area.

According to the present invention, in order to prevent such a problem, a low refractive layer LLR having a refractive index lower than the refractive index of the light guide plate GP is disposed between the light guide plate GP and the color control member CCP. Therefore, the total reflection efficiency in the light guide plate GP may be increased by increasing the minimum angle at which the total reflection is made at the boundary between the light guide plate GP and the low refractive layer LLR.

The backlight member LP may be disposed under the display panel DP to provide light to the display panel DP. The backlight member LP according to the present invention includes a light source unit LU, a light guide plate GP, and an output pattern CP.

The light source unit LU includes a circuit board PB and a light source LD. The circuit board PB is electrically connected to the light source LD to control light emitted from the light source LD. As illustrated in FIG. 1, a plurality of light sources LD may be provided on the circuit board PB. The light source unit LU according to the present invention may be an edge type disposed on the side surface of the light guide plate GP.

The circuit board PB may be provided with a plurality of circuit boards to correspond to each of the plurality of light sources. Although not shown, the circuit board PB may include a substrate and a circuit layer. The circuit layer is electrically connected to the light source LD. Specifically, the circuit layer may be connected to electrodes (not shown) of the light source LD. The circuit layer may be formed of conductive lines connected to each of the electrodes, or conductive pads. The circuit layer may be made of a metallic material and may include, for example, copper (Cu).

The light source LD may be electrically connected to the circuit layer. The light source LD may include a light emitting diode (LED) that generates light in response to an electrical signal received from the circuit layer. The light emitting diode may have a structure in which a first electrode electrically connected to a circuit layer, an n-type semiconductor layer, an active layer, a p-type semiconductor layer, and a second electrode facing the first electrode and electrically connected to the circuit layer are sequentially stacked. have. When a driving voltage is applied to the light emitting diode, electrons and holes are moved and combined, and light is generated by the combination of the electrons and holes. The light source LD according to an embodiment of the present invention may include a plurality of light emitting diodes, and the lights generated by the light emitting diodes may have the same or different colors from each other, and is not limited to any one embodiment. The light source LD according to an embodiment of the present invention may be blue light.

The light guide plate GP is disposed under the display panel DP. The light guide plate GP guides the light received from the light source unit LU in the direction of the display panel DP. The light guide plate GP includes a material having high light transmittance in the visible light region. The light guide plate GP according to an embodiment of the present invention may be made of an optically transparent material. For example, the light guide plate may be made of a glass substrate, a plastic substrate, or a combination thereof. The light guide plate GP according to an embodiment of the present invention will be described as being made of glass.

The light guide plate GP includes a light exit surface G1, a bottom surface G2, and a plurality of side surfaces G3 and G4. The light exit surface G1 may be defined as a surface facing the display panel DP. The lower surface G2 faces the light exit surface G1. As described in FIG. 1, the plurality of side surfaces G3, G4, hereinafter, side surfaces) are first and second side surfaces G3 and G4 facing in the first direction DR1, and the second direction DR2. And third and fourth sides facing each other and connected to the first and second sides G3 and G4.

According to an embodiment of the present invention, an incident light surface is defined on at least one of the side surfaces G3 and G4. The light incident surface faces the light source LD and receives light provided from the light source LD. According to an embodiment, the first side G3 may be defined as a light incident surface. The light guide plate GP may provide light to the display panel DP by guiding light incident on the light incident surface G3 and outputting it through the light exit surface G1. However, this is illustratively illustrated, and the light incident surface may be defined in any one of the second to fourth aspects, or may be defined in two or more aspects, and is not limited to any one embodiment.

The light exit pattern CP may be formed of a material having a different refractive index value from the light guide plate GP. The light exit pattern CP transmits light emitted from the light source unit LU and incident on one side of the light guide plate GP to the other side of the light guide plate GP, or incident on the lower surface G2 of the light guide plate GP It may be to change the direction of the light so that the transmitted light is transmitted in the direction of the light exit surface G1, which is the upper surface of the light guide plate GP.

Referring again to FIG. 1, the storage member HAU is disposed under the display panel DP to accommodate the display panel DP. The storage member HAU may cover the display panel DP such that the upper surface, which is the display surface of the display panel DP, is exposed. For example, the storage member HAU may cover a side surface and a bottom surface of the display panel DP and expose the entire upper surface. In addition, unlike this, the storage member HAU may cover a part of the upper surface as well as the side and bottom surfaces of the display panel DP, and is not limited to any embodiment.

The barrier layer BRL according to an embodiment may include any one of silicon nitride (SiN _X ) and silicon oxide (SiO _X ). The film density of the barrier layer (BRL) containing silicon nitride (SiN _X ) is 1.50 g / cm ³ To 3.0 g / cm ³ . In addition, the content of nitrogen (N) compared to silicon (Si) of the barrier layer (BRL) including silicon nitride (SiN _X ) may be 0.70 or more and 1.50 or less.

According to an embodiment, the residual stress of the barrier layer BRL including silicon nitride (SiN _X ) may be -300 MPa to 500 MPa. The residual stress according to an embodiment may be compressive stress.

The film density of the barrier layer (BRL) containing silicon nitride (SiN _X ) and the content of nitrogen (N) compared to silicon (Si) are 1.50 g / cm ^3, respectively. When less than and less than 0.70, the moisture vapor transmission rate (MVTR) of the barrier layer (BRL) may be lowered to decrease the life of the color control member (CCP). In addition, due to oxidation on the surface of the barrier layer BRL, peeling problems between the barrier layer BRL and adjacent layers may occur.

When the film density of the barrier layer (BRL) containing silicon nitride (SiN _X ) and the content of nitrogen (N) relative to silicon (Si) are greater than 3.0 g / cm ³ and greater than 1.50, respectively, the film of the barrier layer (BRL) The problem of increasing the process cost due to the increase in density may occur.

The barrier layer BRL according to an embodiment of the present invention may include silicon oxide (SiO _X ). The film density of the barrier layer (BRL) containing silicon oxide (SiO _X ) is 1.50 g / cm ³ To 3.0 g / cm ³ .

The residual stress of the barrier layer BRL including silicon oxide (SiO _X ) may be -500 MPa to 500 MPa. The residual stress according to an embodiment may be compressive stress.

The film density of the barrier layer (BRL) containing silicon oxide (SiO _X ) is 1.50 g / cm ³ If less than, the moisture vapor transmission rate (MVTR) of the barrier layer (BRL) is lowered, so that the life of the color control member (CCP) may be reduced. In addition, due to oxidation on the surface of the barrier layer BRL, peeling problems between the barrier layer BRL and adjacent layers may occur.

When the film density of the barrier layer (BRL) containing silicon oxide (SiO _X ) is greater than 3.0 g / cm ³ , a problem may arise that a process cost increases due to an increase in the film density of the barrier layer (BRL).

4A and 4B are enlarged views of one configuration of an optical member according to an embodiment of the present invention. Similar reference numerals are used for the same configuration as in FIGS. 1 to 3, and duplicate descriptions are omitted.

4A, the barrier layer BRL-A according to an exemplary embodiment includes a first inorganic layer SBL1 and a second inorganic layer SBL2. The first inorganic layer SBL1 may be disposed between the low refractive layer LLR and the color control member CCP illustrated in FIG. 3 to contact the lower surface of the low refractive layer LLR. The first inorganic layer SBL1 may seal a lower surface among the surfaces of the color control member CCP. The second inorganic layer SBL2 may be disposed between the optical sheet member OF and the color control member CCP shown in FIG. 3 to contact the upper surface of the low refractive layer LLR. The second layer SLB2 may seal faces of the color control member CCP that are not sealed by the first inorganic layer SBL1 among the color control members CCP.

According to one embodiment, the ends of each of the first inorganic layer SBL1 and the second inorganic layer SBL2 may be in contact with each other with the color control member CCP therebetween to seal the color control member CCP. . Accordingly, it may serve to prevent the penetration of moisture and / or oxygen flowing into the color control member (CCP).

According to an embodiment, at least one of the first inorganic layer SBL1 and the second inorganic layer SBL2 may be formed of a single layer.

When the barrier layer (BRL) made of a single layer includes silicon nitride (SiNX), the thickness of the first layer SBL1 may be 0.1 μm or more, and the thickness of the second layer SBL2 may be 0.3 μm or more.

The thickness of the first layer SBL1 when the barrier layer BRL made of a single layer contains silicon oxide (SiO _X ) is the first layer when the barrier layer BRL includes silicon nitride (SiNX). It may be thicker than the thickness of (SBL1). For example, the thickness of the first layer SBL1 may be 0.3 μm or more. In addition, the thickness of the second layer SBL2 may be 0.3 μm or more.

According to an embodiment of the present invention, the thickness of the first layer SBL1 of the barrier layer BRL is greater than that of silicon nitride (SiNX) when it includes silicon oxide (SiO _X ). Do. This is a growth surface that seals the color control member (CCP) compared to silicon nitride (SiNX) when the barrier layer (BRL) containing silicon oxide (SiO _X ) is grown at the boundary of the color control member (CCP) with severe irregularities. It may have a characteristic that the boundary of is formed late. Due to this, the thickness of the first layer SBL1 of the barrier layer BRL includes silicon oxide (SiO _X ) to effectively block moisture and / or oxygen penetration into the color control member (CCP). (SiNX).

4B, the barrier layer BRL-B according to an exemplary embodiment includes a first layer SBL1-1 and a second layer SBL2-1, each of which includes a plurality of layers. The first layer SBL1-1 includes the first sub-layer SL1-1 and the second sub-layer SL1-2. The second layer SBL2-1 includes a first sub-layer SL2-1 and a second sub-layer SL2-2.

The first sub-layer SL1-1 according to an embodiment may include silicon nitride (SiNX), and the second sub-layer SL1-2 may include silicon oxide (SiO _X ). The first sub-layer SL1-1 and the second sub-layer SL1-2 may be alternately disposed.

The first sub-layer SL2-1 according to an embodiment may include silicon nitride (SiNX), and the second sub-layer SL2-2 may include silicon oxide (SiO _X ). The second sub-layer SL2-1 and the second sub-layer SL2-2 may be alternately disposed.

Although FIG. 4B shows a single first sub-layer SL1-1 and SL2-1 and a single second sub-layer SL1-2 and SL2-1, the present invention is not limited thereto. The fields and the second sub-layers may be alternately arranged. In addition, the sub-layer in contact with the color control member (CCP) may include silicon oxide (SiO _X ), and is not limited to any embodiment.

5 is an exploded perspective view of a display device according to an exemplary embodiment of the present invention. 6 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention. 7 is a plan view of an optical member according to an embodiment of the present invention. 8 is an enlarged view of the CC area of FIG. 6 enlarged. The same reference numerals are used for the same configuration as in FIGS. 1 to 4B, and duplicate descriptions are omitted.

5 to 8, the display module DD-1 according to an exemplary embodiment includes a backlight member LP, a first base substrate BL1, a display unit DPP, an optical member OPM-1, and 2 includes a base substrate BL2, a first polarization layer PL, and a second polarization layer ICP.

The optical member OPM-1 according to an embodiment may include a color control member CCP-1, a barrier layer BRL-1, a low refractive layer LLR, and a planarization layer OC.

In the configuration of the display module DD-1 according to an embodiment, the backlight member LP, the first base substrate BL1, the display unit DPP, and the second base substrate BL2 are illustrated in FIGS. 1 to 3. The illustrated backlight member LP, the first base substrate BL1, the display portion DPP, and the second base substrate BL2 may have the same configuration.

The display module DD-1 according to an embodiment may include a first polarization layer PL and a second polarization layer ICP. The first polarization layer PL may be disposed between the backlight member LP and the first base substrate BL1. The first polarization layer PL may be provided as a separate member, or may include a polarizer formed by coating or vapor deposition. The first polarization layer PL may be formed by coating a material including a dichroic dye and a liquid crystal compound. Alternatively, the first polarization layer PL may include a wire grid type polarizer.

The first polarization layer PL may be disposed on the lower surface of the first base substrate BL1. However, the present invention is not limited thereto, and the first polarization layer PL may be disposed on the upper surface of the first base substrate BL1, and in this case, the first polarization layer PL is also a liquid crystal layer of the display unit DDP. (LCL: see FIG. 3) and the first base substrate (BS1).

The second polarization layer ICP may be disposed between the optical member OPM-1 and the display panel DP. The second polarization layer (ICP) may be an in-cell type polarization layer. The second polarizing layer (ICP) may be formed by coating a material containing a dichroic dye and a liquid crystal compound. Alternatively, the second polarization layer (ICP) may be a wire grid type polarization layer.

The color control member CCP-1 according to an embodiment may be disposed between the second base substrate BL2 and the display unit DPP. The color control member CCP-1 may include a plurality of color controllers CCL1, CCL2, and CCL3 spaced apart from each other on a plane.

The first to third color controllers CCL1, CCL2, and CCL3 may be provided on the second base substrate BL2. The first to third color controllers CCL1, CCL2, and CCL3 may be provided on the lower surface of the second base substrate BL2.

The color control member (CCP-1) according to an embodiment is a first converting body (QD1) that absorbs the first light and converts the wavelength to the second light, and a second that absorbs the first light and converts the wavelength to the third light. Conversion object (QD2) may be included. For example, the first light may be blue light, the second light may be green light, and the third light may be red light.

On the other hand, the first control member (QD1) and the second conversion member (QD2) included in the color control member (CCP-1) according to an embodiment is included in the color control member (CCP) of the embodiment described in FIG. The description of the converted objects (QD1, QD2) can be applied in the same way. For example, the first transformant QD1 may be a green quantum dot and the second transformant QD2 may be a red quantum dot.

The color control member CCP-1 includes a first color control unit CCL1 including a first conversion body QD1, a second color control unit CCL2 including a second conversion body QD2, and a first light. It may include a third color control unit (CCL3) to transmit.

For example, the first converter QD1 may absorb the first light that is blue light and emit green light, and the second converter QD2 may absorb the first light that is blue light and emit red light. That is, the first color control unit CCL1 may be a light emitting region emitting green light, and the second color control unit CCL2 may be a second light emitting region emitting red light.

Also, the third color control unit CCL3 may be a portion that does not include a conversion body. The third color control unit CCL3 may be a portion that transmits the first light provided from the backlight member LP. That is, the third color control unit CCL3 may be an area that transmits blue light. The third color control unit CCL3 may be formed of a polymer resin. For example, the third color control unit CCL3 may be acrylic resin, urethane resin, silicone resin, epoxy resin, or the like. The third color control unit CCL3 may be formed of transparent resin or white resin.

The color control member CCP-1 may further include a light blocking part BM. As illustrated in FIG. 7, the light blocking part BM may have a plurality of openings OPC. The light blocking part BM may divide the first to third color control parts CCL1, CCL2, and CCL3. For example, each of the first to third color control units CCL1, CCL2, and CCL3 may be disposed to overlap with the corresponding opening OPC and be partitioned by the light blocking unit BM. Accordingly, the light blocking part BM may be to divide a boundary between adjacent first to third color control parts CCL1, CCL2, and CCL3.

At least a portion of the light blocking part BM may be disposed to overlap with the neighboring first to third color control parts CCL1, CCL2, and CCL3. That is, in the plane defined by the first direction DR1 and the third direction DR3, the light blocking part BM has at least a portion of the first to third color control parts CCL1, CCL2, and CCL3 neighboring in the thickness direction. It can be arranged to overlap.

The light blocking part BM may be a black matrix. The light blocking portion BM may be formed of an organic light blocking material including a black pigment or dye or an inorganic light blocking material. The light blocking portion BM prevents light leakage.

The first to third color controllers CCL1, CCL2, and CCL3 may be arranged to be spaced apart from each other on a plane defined by the first direction DR1 and the second direction DR2. The first to third color control units CCL1, CCL2, and CCL3 may be partitioned from the light blocking unit BM and spaced apart from each other. For example, the first to third color affected areas CCL1, CCL2, and CCL3 that emit different color light in the first direction DR1 are spaced apart from each other and arranged side by side, and are identical in the second direction DR2. Color controllers that emit color light may be spaced apart from each other and arranged side by side.

Meanwhile, FIG. 7 illustrates an embodiment of the arrangement of the first to third color control units CCL1, CCL2, and CCL3, but is not limited thereto. For example, the first to third color control units CCL1, CCL2 , CCL3) may be provided in different areas from each other, and is not limited to any one embodiment.

As illustrated in FIG. 8, the color control member CCP-1 may further include optical filter layers FP1 and FP2 disposed on the first and second color controllers CCL1 and CCL2.

The optical filter layers FP1 and FP2 may block and transmit light of different colors. The optical filter layers FP1 and FP2 may be disposed on the first and second color controllers CCL1 and CCL2 to block the first light and transmit the second or third light.

For example, the light filter layers FP1 and FP2 may block blue light and transmit green light and red light. The optical filter layers FP1 and FP2 may be disposed on the first and second color controllers CCL1 and CCL2. However, the present invention is not limited thereto, and may include an optical filter layer (not shown) disposed on the third color control unit CCL3. The optical filter layer FP3 may transmit only blue light.

The optical filter layers FP1 and FP2 may be composed of one layer, or a plurality of layers may be stacked. For example, the optical filter layers FP1 and FP2 may be a single layer containing a material that absorbs blue light, or the optical filter layers FP1 and FP2 may have a structure in which an insulating film having a low refractive index and an insulating film having a high refractive index are stacked.

In addition, the optical filter layers FP1 and FP2 may include pigments or dyes to block light of a specific wavelength. For example, in one embodiment, the light filter layers FP1 and FP2 may be yellow color filter layers that absorb blue light to block blue light.

The optical filter layers FP1 and FP2 may include a first optical filter layer FP1 disposed on the first color control unit CCL1 and a second optical filter layer FP2 disposed on the second color control unit CCL2. . The first optical filter layer FP1 may be a filter layer that blocks blue light and transmits green light. Also, the second optical filter layer FP2 may be a filter layer that blocks blue light and transmits red light.

The optical member OPM-1 according to the present invention includes a barrier layer BRL-1. The barrier layer BRL-1 according to an embodiment includes a first inorganic layer SBL1-1 and a second inorganic layer SBL2-1. The first inorganic layer SBL1-1 is disposed on the second base substrate BL2. The first inorganic layer SBL1-1 covers the light blocking part BM and the optical filter layers FP1 and FP2. The first inorganic layer SBL1-1 may cover a portion of the second base substrate BL2 exposed by the light blocking part BM and the optical filter layers FP1 and FP2 among the second base substrate BL2.

The second inorganic layer SBL2-1 may be disposed on the color control member CCP-1. The second inorganic layer SBL2-1 seals the first to third color control units CCL1, CCL2, and CCL3 together with the first inorganic layer SBL1-1. According to an embodiment, the first inorganic layer SBL1-1 and the second inorganic layer SBL2-1 overlapping the light blocking part BM may be in contact with each other.

Accordingly, each of the first to third color control units CCL1, CCL2, and CCL3 may be individually sealed by the first inorganic layer SBL1-1 and the second inorganic layer SBL2-1. Accordingly, the display module DD-1 of one embodiment can effectively block the penetration of moisture and / or oxygen flowing into the color control member CCP-1.

The barrier layer BRL-1 according to an embodiment may include the same material as the barrier layer BRL described with reference to FIGS. 3 to 4B. For example, the barrier layer BRL-1 may include silicon nitride (SiN _X ) and / or silicon oxide (SiO _X ). In addition, the barrier layer (BRL-1) may be composed of a single layer, each of the first inorganic layer (SBL1) and the second inorganic layer (SBL2) may be made of a plurality of layers, limited to any one embodiment Does not work.

The low refractive layer LLR is disposed on the second inorganic layer SBL2-1. The low refractive index layer LLR may cover the second inorganic layer SBL2-1. The optical member OPM-1 according to an embodiment is disposed in the lower refractive layer LLR under the color control member CCP-1 to be emitted from the color control member CCP-1 in the direction of the display unit DPP. It is possible to change the direction in which the light is directed.

For example, the low refractive layer LLR is disposed under the color control member CCP-1 to reflect light emitted from the color control member CCP-1 again, and thus is directed toward the second base substrate BL2. It may be to function as a light extraction to proceed to. Accordingly, the display module DD-1 of one embodiment may exhibit improved light efficiency.

The optical member OPM-1 may include a planarization layer OC. The planarization layer OC may be disposed to cover the unevenness of the low refractive layer LLR covering the first to third color controllers CCL1, CCL2, and CCL3. The planarization layer OC covers the unevenness of the low refractive layer LLR to provide a flat surface. The planarization layer (OC) may include an organic material.

9A and 9B are enlarged views of one configuration of an optical member according to an embodiment of the present invention. 9A and 9B are examples of regions corresponding to the CC region of FIG. 8. The same reference numerals are used for the same configuration as in FIG. 8, and duplicate description is omitted.

Referring to FIG. 9A, the first inorganic layer SBL1-1 of FIG. 8 may be omitted. Accordingly, the second inorganic layer SBL2-1 is disposed on the color control member CCP-1.

The second inorganic layer SBL2-1 may seal the first to third color controllers CCL1, CCL2, and CCL3 together with the light blocking part BM and the light filter layers FP1 and FP2. For example, a portion of the second inorganic layer SBL2-1 overlapping the light blocking portion BM of the second inorganic layer SBL2-1 may contact the light blocking portion BM. Accordingly, each of the first to third color control units CCL1, CCL2, and CCL3 may be individually sealed by the second inorganic layer SBL2-1.

Referring to FIG. 9B, the optical member OPM-1 according to an embodiment may further include a reflective layer RP. The reflective layer RP may be disposed between the color control member CCP-1 and the display panel DP. For example, the reflective layer RP may be disposed to be spaced apart from the second inorganic layer SBL2-1 with the low refractive layer LLR interposed therebetween. The reflective layer RP may be disposed to be spaced apart from the second inorganic layer SBL2-1 with the low refractive layer LLR interposed therebetween.

The reflective layer RP transmits the first light provided from the backlight member LP, and is emitted from the first and second color controllers CCL1 and CCL2 of the color control member CCP-1 to the display unit DPP. The second light and the third light toward the light may be a selective transmission reflective layer RP that reflects and is emitted in a direction toward the second base substrate BL2. The reflective layer RP may be a single layer or a plurality of insulating layers stacked.

For example, the reflective layer RP is formed by including a plurality of insulating films, and a range of transmission and reflection wavelengths may be determined according to a difference in refractive index between the stacked layers, the thickness of each of the stacked layers, and the number of stacked layers. .

In one embodiment, the reflective layer RP may include a first insulating film and a second insulating film having different refractive indices. Each of the first insulating film and the second insulating film may be provided in plural and alternately stacked. For example, a metal oxide material may be used as an insulating film having a relatively high refractive index. Specifically, the insulating film having a high refractive index may include titanium oxide (TiO _x ), tantalum oxide (TaO _x ), hafnium oxide (HfO _x ), and zirconium. It may include at least one of oxides (ZrO _x ). In addition, the insulating film having a relatively low refractive index may include silicon oxide (SiO _x ) or silicon nitride (SiN _x ). In addition, in one embodiment, the reflective layer RP may be formed by repeatedly depositing silicon nitride (SiN _x ) and silicon oxide (SiO _x ) alternately.

In FIG. 9B, the reflective layer RP spaced apart from the second inorganic layer SBL2-1 with the low refractive layer LLR therebetween is illustrated, but is not limited thereto, and the reflective layer RP includes the second inorganic layer ( SBL2-1) and the low-refractive layer (LRL), it is not limited to any one embodiment.

10 is an exploded perspective view of a display device according to an exemplary embodiment of the present invention. 11 is a cross-sectional view of a display device according to an exemplary embodiment of the present invention. The same reference numerals are used for the same configuration as in FIGS. 1 to 4B, and duplicate descriptions are omitted.

Referring to FIG. 10, the display module DD-2 according to an embodiment includes a first base substrate BL1, a display unit DPP-2, an optical member OPM-2, and a second base substrate BL2. Includes.

The optical member OPM-2 according to an embodiment may include a low refractive layer LLR, a color control member CCP-2, and a barrier layer BRL-2.

The display unit DPP-2 according to an embodiment may be a display panel including an organic electroluminescent display element. For example, the pixel PX included in the display unit DPP-2 may include a transistor TR disposed on the first base substrate BL1 and an organic light emitting device OLD connected to the transistor TR. have

The transistor TR includes a semiconductor pattern AL, a control electrode GE, an input electrode SE, and an output electrode DE.

The semiconductor pattern AL and the first insulating layer ILD1 of the transistor TR are disposed on the first base substrate BL1. The first insulating layer ILD1 covers the semiconductor pattern AL.

The control electrode GE and the second insulating layer ILD2 are disposed on the first insulating layer ILD1. The second insulating layer ILD2 covers the control electrode GE. Each of the first insulating layer ILD1 and the second insulating layer ILD2 includes an organic layer and / or an inorganic layer. Each of the first insulating layer ILD1 and the second insulating layer ILD2 may include a plurality of thin films.

The input electrode SE, the output electrode DE, and the third insulating layer ILD3 are disposed on the second insulating layer ILD2. The third insulating layer ILD3 covers the input electrode SE and the output electrode DE.

The input electrode SE and the output electrode DE are respectively connected to the semiconductor pattern AL through through holes defined in the first insulating layer ILD1 and the second insulating layer ILD2.

The organic light emitting device OLD and the pixel defining layer PXL are disposed on the third insulating layer ILD3. The organic light emitting device OLD includes an anode electrode AE, a light emitting layer EML, a cathode electrode CE, and a hole transport region HCL defined between the anode electrode AE and the light emitting layer EML, and a cathode electrode CE And an electron transport region (ECL) defined between the light emitting layer (EML).

The anode electrode AE is connected to the output electrode DE through a through hole defined in the third insulating layer ILD3.

The pixel defining layer PXL is disposed on the third insulating layer ILD3. An opening OB exposing at least a portion of the anode electrode AE may be defined in the pixel defining layer PXL. The region where the anode electrode AE is disposed may correspond to the emission region of light emitted from the organic light emitting element OLD. In another embodiment of the present invention, the region in which the opening OB is defined may correspond to the light emitting region.

The hole transport region HCL is disposed on the anode electrode AE to cover the anode electrode AE and the pixel defining layer PXL. The hole transport region HCL may include at least one of a hole injection layer, a hole transport layer, and a single layer having a hole injection function and a hole transport function simultaneously.

The emission layer EML is disposed on the hole transport region HCL. The emission layer EML according to an embodiment may be defined as an organic layer including an organic material.

The emission layer EML may overlap the opening OB defined in the pixel defining layer PXL. For example, the emission layer EML may include a plurality of patterns overlapping each of the openings OB. The emission layer EML may include a fluorescent material, a phosphorescent material, or a quantum dot. The light emitting layer EML may generate light having one color or light mixed with at least two colors. The light emitting region according to the present invention may overlap the light emitting layer EML on a plane.

The electron transport region ECL is disposed on the emission layer EML to cover the emission layer EML and the hole transport region HCL. The electron transport region (ECL) may include at least one of an electron transport material and an electron injection material. The electron transport region (ECL) may be an electron transport layer including an electron transport material or a single electron injection / transport layer including an electron transport material and an electron injection material.

The cathode electrode CE is disposed on the electron transport region ECL to face the anode electrode AE. The cathode electrode CE may be made of a material having a low work function to facilitate electron injection.

The encapsulation layer TFE is disposed on the cathode electrode CE. The encapsulation layer TFE covers the entire surface of the cathode electrode CE to seal the organic light emitting device OLD. The encapsulation layer TFE protects the organic light emitting device OLD from moisture and foreign matter. The encapsulation layer TFE may be a layer formed by vapor deposition.

The encapsulation layer TFE may include an inorganic layer and / or an organic layer. The inorganic layer is, for example, aluminum oxide (AlOx), silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), silicon carbide (SiCx), titanium oxide (TiOx), zirconium oxide (ZrOx), And zinc oxide (ZnOx).

The organic layer includes, for example, at least one of epoxy, polyimide (PI), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (PE), and polyacrylate. can do. A plurality of inorganic layers according to an embodiment may be provided, and the inorganic layers may be disposed with an organic layer interposed therebetween to cover the organic layer.

The color control member CCP-2 according to an embodiment is disposed on the second base substrate BL2. The color control member CCP-2 may include a light blocking part BM, light filter layers FP1 and FP2, a barrier layer BL-2, and a dam part DM.

The color control member CCP-2 may include first to third color controllers CCL1, CCL2, and CCL3. The first to third color controllers CCL1, CCL2, and CCL3, the optical filter layers FP1, FP2, and the light blocking portion BM are included in the optical member OPM-1 described with reference to FIGS. 5 to 7 The descriptions of the first and third color control units CCL1, CCL2, and CCL3, the optical filter layers FP1, FP2, and the light blocking unit BM may be equally applied.

The first to third color controllers CCL1, CCL2, and CCL3 according to an embodiment may be disposed to overlap the corresponding light emitting layer EML. Accordingly, each of the color controllers CCL1, CCL2, and CCL3 may be arranged to overlap the light emitting region overlapping the light emitting layer EML.

The dam part DM may be disposed to overlap the light blocking part BM. The dam unit DM may be disposed between each of the first to third color control units CCL1, CCL2, and CCL3. The dam unit DM may be disposed to be non-overlapping with the light emitting region overlapping the light emitting layer EML. Accordingly, each of the first to third color control units CCL1, CCL2, and CCL3 may be partitioned by the dam unit DM and overlap the emission region. The dam portion DM may be formed of a polymer resin. For example, the dam portion DM may be formed of an acrylic resin, an imide resin, or the like.

The optical filter layers FP1 and FP2 may be disposed on the first and second color controllers CCL1 and CCL2 to block the first light and transmit the second or third light. That is, the light filter layers FP1 and FP2 may block blue light and transmit green light and red light. However, the present invention is not limited thereto, and may include an optical filter layer (not shown) disposed on the third color control unit CCL3. The optical filter layer FP3 may transmit only blue light.

The barrier layer BRL-2 according to an embodiment includes a first inorganic layer SBL1-2 and a second inorganic layer SBL2-2. The first inorganic layer SBL1-2 is disposed on the second base substrate BL2. The first inorganic layer SBL1-2 covers the light blocking part BM, the optical filter layers FP1 and FP2, and the dam part DM. The first inorganic layer SBL1-2 may cover a portion of the second base substrate BL2 exposed by the light blocking part BM and the optical filter layers FP1 and FP2 among the second base substrate BL2.

The second inorganic layer SBL2-2 may be disposed on the color control member CCP-2. The second inorganic layer SBL2-2 seals the first to third color control units CCL1, CCL2, and CCL3 together with the first inorganic layer SBL1-2. According to an embodiment, the first inorganic layer SBL1-2 and the second inorganic layer SBL2-2 overlapping the dam portion DM may be in contact with each other.

Accordingly, each of the first to third color control units CCL1, CCL2, and CCL3 may be individually sealed by the first inorganic layer SBL1-2 and the second inorganic layer SBL2-2. Accordingly, the display module DD-2 according to an exemplary embodiment may efficiently block moisture and / or oxygen from entering the color control member CCP-2.

The barrier layer BRL-2 according to an embodiment may include the same material as the barrier layer BRL described with reference to FIGS. 3 to 4B. For example, the barrier layer BRL-2 may include silicon nitride (SiN _X ) and / or silicon oxide (SiO _X ). In addition, the barrier layer (BRL-2) may be composed of a single layer, each of the first inorganic layer (SBL1) and the second inorganic layer (SBL2) may be made of a plurality of layers, limited to any one embodiment Does not work.

The low refractive layer LLR is disposed on the second inorganic layer SBL2. The low refractive layer LLR is disposed under the color control member CCP-2 to reflect light emitted from the color control member CCP-2 again to advance in the direction toward the second base substrate BL2. It may be a function of light extraction.

The planarization layer OC is disposed on the low refractive layer LLR. The planarization layer OC may be disposed to cover the unevenness of the low refractive layer LLR covering the first to third color controllers CCL1, CCL2, and CCL3. The planarization layer OC covers the unevenness of the low refractive layer LLR to provide a flat surface. The planarization layer (OC) may include an organic material.

Although not illustrated, the optical member OPM-2 may further include a reflective layer disposed on the second inorganic layer SBL2-2. The reflective layer may perform the same function as the reflective layer RP illustrated in FIG. 9B.

12A and 12B are cross-sectional views of a display device according to an exemplary embodiment. The same reference numerals are used for the same configuration as in FIGS. 1 to 4B, and duplicate descriptions are omitted.

Referring to FIG. 12A, the first inorganic layer SBL1-1 of FIG. 8 may be omitted. Accordingly, the second inorganic layer SBL2-2 is disposed on the color control member CCP-2.

The second inorganic layer SBL2-2 seals the first to third color controls CCL1, CCL2, and CCL3 together with the light blocking part BM, the dam part DM, and the optical filter layers FP1 and FP2. You can. For example, a portion of the second inorganic layer SBL2-2 overlapping the dam portion DM among the second inorganic layers SBL2-2 may contact the dam portion DM. Accordingly, each of the first to third color control units CCL1, CCL2, and CCL3 may be individually sealed by the second inorganic layer SBL2-2.

Referring to FIG. 12B, unlike the light emitting layer EML of FIG. 11, the light emitting layer EML-1 according to an embodiment may be disposed as a common layer. For example, the emission layer EML-1 may be disposed to cover the entire surface of the hole transport region HCL. The emission layer EML-1 according to an embodiment may be defined as an organic layer containing an organic material.

According to the present invention, the light provided from the display unit DPP-2 to the optical member OPM-2 may be blue light. Accordingly, since the light generated in each pixel PX has light of the same color, the emission layer EML-1 may be disposed as a common layer on the hole transport region HCL without a separate patterning process. .

According to the embodiments described with reference to FIGS. 10 to 12B, by including a barrier layer (BRL-2) sealing the color control member (CCP-2), an inorganic layer in contact with the barrier layer (BRL-2), For example, the problem of peeling off with the low refractive layer (LRL) or the reflective layer (RP) can be improved.

Although described above with reference to the preferred embodiment of the present invention, those skilled in the art or those skilled in the art will depart from the spirit and technical scope of the invention described in the claims below. It will be understood that various modifications and changes can be made to the present invention without departing from the scope.

Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

DS: Display device DD: Display module
DP: Display panel DPP: Display
OPM: Optical member LP: Backlight member
BRL: barrier layer SBL1: first inorganic layer
SBL2: Second inorganic layer CCP: Color control member

Claims (26)

A color control member including quantum dots (quamtum-dot);
A barrier layer sealing the color control member; And
And a low refractive index layer spaced apart from the color control member with the barrier layer interposed therebetween.
The barrier layer has a film density of 1.50 g / cm ³ To 3.0 g / cm ³ of optical member. According to claim 1,
The barrier layer is an optical member, characterized in that it comprises a silicon nitride (SiN _X ). According to claim 2,
The optical member characterized in that the content of nitrogen (N) compared to silicon (Si) of the barrier layer is 0.70 or more and 1.50 or less. According to claim 2,
The residual stress of the barrier layer is -300MPa to 500MPa, characterized in that the optical member. According to claim 1,
The barrier layer is an optical member, characterized in that it comprises a silicon oxide (SiO _X ). The method of claim 5,
The residual stress of the barrier layer is -500MPa to 500MPa, characterized in that the optical member. According to claim 1,
The barrier layer,
And a first inorganic layer covering a rear surface of the color control member and a second inorganic layer covering an upper surface of the color control member. The method of claim 7,
Each of the first inorganic layer and the second inorganic layer,
Optical member, characterized in that consisting of a single layer. The method of claim 8,
The barrier layer includes silicon nitride (SiN _X ),
The thickness of the first inorganic layer is 0.1㎛ or more,
The thickness of the second inorganic layer is an optical member, characterized in that 0.3㎛ or more. The method of claim 8,
The barrier layer includes silicon oxide (SiO _X ),
The thickness of the first inorganic layer is 0.3㎛ or more,
The thickness of the second inorganic layer is an optical member, characterized in that 0.3㎛ or more. The method of claim 7,
At least one of the first inorganic layer and the second inorganic layer,
And a first layer comprising silicon nitride (SiN _X ) and a second layer comprising silicon oxide (SiO _X ) stacked with the first layer. The method of claim 11,
Each of the first layer and the second layer,
It is provided in plural,
The first layer and the second layer is an optical member, characterized in that arranged alternately with each other. Base substrate;
A plurality of pixels disposed on the base substrate;
A color control member disposed on one of the upper and lower portions of the pixels and including quantum dots; And
It includes a barrier layer for sealing the color control member,
And a low refractive index layer spaced apart from the color control member with the barrier layer interposed therebetween.
The barrier layer has a film density of 1.50 g / cm ³ To 3.0 g / cm ³ . The method of claim 13,
The barrier layer,
And a first inorganic layer covering a rear surface of the color control member and a second inorganic layer covering an upper surface of the color control member. The method of claim 14,
The barrier layer includes silicon nitride (SiN _X ),
A display device characterized in that the content of nitrogen (N) compared to silicon (Si) of the barrier layer is 0.70 or more and 1.50 or less. The method of claim 15,
The thickness of the first inorganic layer is 0.1㎛ or more,
The display device of claim 2, wherein the thickness of the second inorganic layer is 0.3 μm or more. The method of claim 14,
The barrier layer includes silicon oxide (SiO _X ),
The thickness of the first inorganic layer is 0.3㎛ or more,
The display device of claim 2, wherein the thickness of the second inorganic layer is 0.3 μm or more. The method of claim 13,
Each of the pixels,
And a transistor disposed on the base substrate, a first electrode connected to the transistor, a second electrode facing the first electrode, and a liquid crystal layer disposed between the first electrode and the second electrode. Display device. The method of claim 18,
A light source disposed under the base substrate and providing light; And
Further comprising a light guide plate including an exit surface facing the base substrate, a lower surface facing the exit surface, an entrance surface facing the light source and connecting the lower surface and the exit surface, and a facing surface facing the entrance surface and,
The light is blue light, characterized in that the display device. The method of claim 19,
And a first polarization layer and a second polarization layer that are spaced apart from each other with the pixels interposed therebetween. The method of claim 19,
The color control member,
And color controllers, each of which converts the light into light of a different color. The method of claim 21,
A light blocking unit including a plurality of openings and an optical filter layer overlapping with at least one of the openings are further included,
At least one of the color control unit,
A display device which is arranged to overlap the optical filter layer. The method of claim 13,
Each of the pixels,
A transistor disposed on the base substrate; And
And an organic light emitting device including a first electrode connected to the transistor, a second electrode spaced apart from the first electrode, and an organic layer disposed between the first electrode and the second electrode. The method of claim 23,
The color control member,
And color controllers that convert light provided from the pixels into light of a different color.
The method of claim 24,
The organic layer,
A display device disposed on the front surface of the base substrate to provide blue light to the color control member. The method of claim 23,
The organic layer includes a plurality of patterns that provide light of different colors,
Each of the patterns,
A display device, characterized in that overlaps with a corresponding color controller among the color controllers.

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